Is it hard to get reservations at RFC at downtown Disney or am I doing something wrong ?
You should be able to make reservations there quite easily. Also, if you want to eat there be sure to get a Landry’s Select Club card. It costs $25, but you get a $25 discount voucher and you get priority seating, where you get the first available table for a party your size. http://www.landrysselect.com/
Only a small percentage of the seats are released to Disney Dining. If you contact the restaurant directly, you should be able to get a table.